DEBUG_USE_MICROSECONDS=Y DEBUG=* node ./examples/node/useMicroseconds.js

binding.gyp

@@ -0,0 +1,8 @@
+{
+ "targets": [
+ {
+ "target_name": "module",
+ "sources": [ "./src/module.c" ]
+ }
+ ]
+}

examples/node/useMicroseconds.js

@@ -0,0 +1,18 @@
+/*
+ * node-gyp configure build
+ *
+ * DEBUG_USE_MICROSECONDS=Y DEBUG=* node ./examples/node/useMicroseconds.js
+ * DEBUG=* node ./examples/node/useMicroseconds.js
+ */
+
+const debug = require('../../')('use:µs');
+
+debug('the ∆ is')
+debug('the ∆ is')
+debug('the ∆ is')
+debug('the ∆ is')
+debug('the ∆ is')
+debug('the ∆ is')
+debug('the ∆ is')
+debug('the ∆ is')
+setTimeout(() => debug('the ∆ is'), 11000)

package.json

@@ -11,6 +11,9 @@
  "log",
  "debugger"
  ],
+ "scripts": {
+ "test": "./node_modules/mocha/bin/_mocha"
+ },
  "author": "TJ Holowaychuk <tj@vision-media.ca>",
  "contributors": [
  "Nathan Rajlich <nathan@tootallnate.net> (http://n8.io)",

src/browser.js

@@ -8,6 +8,7 @@ exports.save = save;
 exports.load = load;
 exports.useColors = useColors;
 exports.storage = localstorage();
+exports.now = function () { return +new Date() }
 
 /**
  * Colors.

src/common.js

@@ -73,7 +73,7 @@ module.exports = function setup(env) {
  var self = debug;
 
  // set `diff` timestamp
- var curr = +new Date();
+ var curr = createDebug.now() 
  var ms = curr - (prevTime || curr);
  self.diff = ms;
  self.prev = prevTime;

src/index.js

@@ -8,4 +8,13 @@ if (typeof process === 'undefined' || process.type === 'renderer' || process.bro
  module.exports = require('./browser.js');
 } else {
  module.exports = require('./node.js');
+ if (process.env.DEBUG_USE_MICROSECONDS) {
+ var humanizeMs = module.exports.humanize
+ module.exports.humanize = delta => {
+ if (delta > 10000) {
+ return humanizeMs((delta + 500) / 1000)
+ }
+ return `${delta}µs`
+ }
+ }
 }

src/module.c

@@ -0,0 +1,49 @@
+#include <node_api.h> /* n-api */
+#include <sys/time.h> /* gettimeofday, timeval (for timestamp in microseconds) */
+
+long long int now () {
+ struct timeval t_us;
+ long long int us;
+
+ if (!gettimeofday(&t_us, NULL)) {
+ us = ((long long int) t_us.tv_sec) * 1000000ll +
+ (long long int) t_us.tv_usec;
+ }
+ else return -1ll;
+
+ return us;
+}
+
+napi_value MyFunction (napi_env env, napi_callback_info info) {
+ napi_status status;
+
+ /* Convert to JS Number the current time in microseconds.
+ */
+ long long int number = now();
+ napi_value myNumber;
+ status = napi_create_int64(env, number, &myNumber);
+ if (status != napi_ok) {
+ napi_throw_error(env, NULL, "Unable to create return value");
+ }
+
+ return myNumber;
+}
+
+napi_value Init (napi_env env, napi_value exports) {
+ napi_status status;
+ napi_value fn;
+
+ status = napi_create_function(env, NULL, 0, MyFunction, NULL, &fn);
+ if (status != napi_ok) {
+ napi_throw_error(env, NULL, "Unable to wrap native function");
+ }
+
+ status = napi_set_named_property(env, exports, "gettimeofday", fn);
+ if (status != napi_ok) {
+ napi_throw_error(env, NULL, "Unable to populate exports");
+ }
+
+ return exports;
+}
+
+NAPI_MODULE(NODE_GYP_MODULE_NAME, Init)

src/node.js

@@ -15,6 +15,8 @@ exports.formatArgs = formatArgs;
 exports.save = save;
 exports.load = load;
 exports.useColors = useColors;
+exports.now = process.env.DEBUG_USE_MICROSECONDS ?
+ require('../build/Release/module').gettimeofday : () => { return +new Date() }
 
 /**
  * Colors.